#include<iostream>
using namespace std;
void swap(int* a ,int* b)
{
	int c;
	c = *a;
	*a = *b;
	*b = c;

}
int main()
{
	int a;
	int b;
	int c;
	cin >> a >> b;
	swap(&a, &b);
	swap(&b, &c);

	char arr[] = "abcdef";




	return 0;
}